131022427 has 2 divisors, whose sum is σ = 131022428. Its totient is φ = 131022426.

The previous prime is 131022407. The next prime is 131022431. The reversal of 131022427 is 724220131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131022427 is a prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 131022398 and 131022407.

It is not a weakly prime, because it can be changed into another prime (131022407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65511213 + 65511214.

It is an arithmetic number, because the mean of its divisors is an integer number (65511214).

Almost surely, 2^131022427 is an apocalyptic number.

131022427 is a deficient number, since it is larger than the sum of its proper divisors (1).

131022427 is an equidigital number, since it uses as much as digits as its factorization.

131022427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 131022427 is about 11446.5028283751. The cubic root of 131022427 is about 507.9042886519.

Adding to 131022427 its reverse (724220131), we get a palindrome (855242558).

The spelling of 131022427 in words is "one hundred thirty-one million, twenty-two thousand, four hundred twenty-seven".